6665 research outputs found
Sort by
Bakteriyel biofilm oluşumu ve inaktivasyonunu etkileyen çevresel faktörler
No full textThesis (Master)--Izmir Institute of Technology, Biotechnology, Izmir, 2020Includes bibliographical references (leaves: 51-61)Text in English; Abstract: Turkish and EnglishObjective of this study was to evaluate effect of UV-C radiation (0, 1.16 and 3.21 kJ/cm2), pomegranate (Punica granatum) seed essential oil (PGEO) and lemon (Citrus lemonum) plant essential oil (CLEO) on decontamination of Candida albicans, Listeria monocytogenes, Staphylococcus aureus and Esherichia coli O157:H7 biofilms formed at +4°C and 20°C on polystyrene, stainless steel and glass surfaces. After 16, 32 and 64 sec UV-C treatment 0.24 log CFU/cm2, 1.61 log CFU/cm2, 1.59 log CFU/cm2 reductions were achieved in the numbers of C. albicans biofilms formed at 20°C on polystyrene. In the numbers of S. aureus biofilms formed at 20°C on polystyrene 0.99 log CFU/cm2, 1.9 log CFU/cm2, 3.91 log CFU/cm2 reductions were obtained after 16, 32 and 64 sec UV-C treatments, respectively. In general C. albicans biofilm formed at 20°C on stainless steel was found as the most UV-C resistant biofilm. CLEO inhibited the growth of C. albicans, L. monocytogenes and S. aureus at MIC values of 186 µg/ml, 103.5 µg/ml and 103.5 µg/ml, respectively. The results of the study showed that UV-C radiation and CLEO can be used as an anti-biofilm agent to control or to prevent biofilm formation of foodborne bacterial pathogens. It was suggested that UV-C radiation and CLEO treatments have potential as a biofilm control interventions for the food industry.Bu çalışmanın amacı UV-C radyasyonunun (0, 1.16 ve 3.21 kJ / cm2), nar (Punica granatum) çekirdeği esansiyel yağı (PGEO) ve limon (Citrus lemonum) bitkisi esansiyel yağının (CLEO) +4°C ve +20°C'de polistiren, paslanmaz çelik ve cam yüzeylerde oluşturulan Candida albicans, Listeria monocytogenes, Staphylococcus aureus and Esherichia coli O157:H7 biyofilmlerinin dekontaminasyonu üzerindeki etkisini değerlendirmekti. 16, 32 ve 64 saniye UV-C uygulanmasından sonra, polistiren üzerinde 20°C'de oluşturulan C. albicans biyofilmlerinin sayısında sırasıyla 0.24 log CFU/cm2, 1.61 log CFU/cm2, 1.59 log CFU/cm2 azalma elde edildi. Polistiren üzerinde 20°C'de oluşturulan S. aureus biyofilmlerinin sayısında 16, 32 ve 64 saniye UV-C uygulanmasından sonra sırasıyla 0.99 log CFU/cm2, 1.9 log CFU/cm2, 3.91 log CFU/cm2 azalma elde edildi. Genel olarak, paslanmaz çelik üzerinde 20°C'de oluşan C. albicans biyofilminin UV-C'ye en dayanıklı biyofilm olduğu bulunmuştur. CLEO, C. albicans, L. monocytogenes ve S. aureus'un büyümesini sırasıyla 186 µg/ml, 103.5 µg/ml ve 103.5 µg/ml MIC değerlerinde inhibe etti. Çalışmanın sonuçları UV-C radyasyonunun ve CLEO'nun gıda kaynaklı bakteriyel patojenlerin biyofilm oluşumunu kontrol etmek veya önlemek için bir anti-biyofilm ajanı olarak kullanılabileceğini göstermiştir. UV-C radyasyonu ve CLEO uygulamalarının, gıda endüstrisi için biyofilm kontrol müdahaleleri olarak potansiyeli olduğu öne sürülmüştür.IYTE Scientific Research (SRP) Project (2019IYTE0218
Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at √s=13 TeV
No full textRatios of cross sections, sigma(Z + c jets)/sigma(Z + jets), sigma(Z + b jets)/sigma(Z + jets), and sigma(Z + c jets)/sigma(Z + b jets) in the associated production of a Z boson with at least one charm or bottom quark jet are measured in proton-proton collisions at root s = 13 TeV. The data sample, collected by the CMS experiment at the CERN LHC, corresponds to an integrated luminosity of 35.9 fb(-1), with a fiducial volume of p(T) > 30 GeV and vertical bar eta vertical bar 25 GeV and vertical bar eta vertical bar < 2.4, and the dilepton mass satisfies 71 < m(z) < 111 GeV. The measured values are sigma(Z + c jets)/sigma(Z + jets) = 0.102 +/- 0.002 +/- 0.009, sigma(Z + b jets)/6(Z + jets) = 0.0633 +/- 0.0004 +/- 0.0015, and sigma(Z + c jets)/sigma(Z + b jets) = 1.62 +/- 0.03 +/- 0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics calculations. These arc the first measurements of the cross section ratios at 13 TeV
Testing the Performance of Various Polymeric Antiscalants for Mitigation of Sb-Rich Precipitates Mimicking Stibnite-Based Geothermal Deposits
No full text, irfan/0000-0001-9724-8683; ciftci, celal/0000-0002-3242-2828; Yesilnacar, Mehmet Irfan/0000-0001-9724-8683; Tonkul, Serhat/0000-0002-8572-1565Scaling is frequently observed in geothermal fields and reduces the energy harvesting of power plants. Recently, Sb-rich deposits have developed in many fields around the world. Various polymeric macromolecules have been used as antiscalants to mitigate the formation of scale. Testing potential commercial antiscalants in field conditions is a tedious and costly process. The artificial synthesis of geothermal deposits in the lab is a more practical and economical way to test the performance of antiscalants. This study obtained a Sb-rich deposit by refluxing SbCl3 and Na2S center dot 3H(2)O in 18 h. The product was found to be a mixture of Sb2O3 and Sb2S3. We examined the performance of antiscalants such as poly(ethylene glycol), poly(vinyl pyrrolidone), Gelatin, and poly(vinyl alcohol) of various molecular weights at 5 to 100 ppm. The formation of Sb2S3 is suppressed in the presence of the polymeric antiscalants. The dosage was found to be critical for the solubilization of Sb-rich deposits. Gelatin of 5 ppm showed the highest performance under the conditions employed in this study. While low dosages improve the concentration of [Sb3+], high dosages are required to increase the solubility of [S2-]. Moreover, the amount of deposit is reduced by 12.4% compared to the reference (in the absence of any polymeric molecules). Thus, comparatively, Gelatin shows the most promising performance among the molecules employed.Scientific Research Projects Committee of Harran University (HUBAP) [19231]The authors thank the Scientific Research Projects Committee of Harran University (HUBAP) under grant no.19231. Microscopy and diffraction were carried out in the Center for Materials Research of the Izmir Institute of Technology. The authors thank Katherine Willcox Ozsari for correcting the language of the manuscript
Ankrajsız dairesel çelik depolama tanklarının güvenilirlik tabanlı sismik değerlendirmesi
No full textThesis (Master)--Izmir Institute of Technology, Civil Engineering, Izmir, 2020Includes bibliographical references (leaves: 74-81)Text in English; Abstract: Turkish and EnglishSince liquid storage tanks are important systems for the safety of industrial facilities, the tightness of these structures and their serviceability are key issues. Therefore, the ability of large liquid storage tanks to withstand damage during earthquakes is of great relevance not only to the engineering profession but also to the safety of society in general. This is because these structures often form an important part of a community's lifeline and therefore should remain in use in emergency situations. In addition, since the content stored in some facilities could be hazardous, in this case, necessary measures must be taken against accidental infiltration. Due to the importance of storage tanks for society, there are many studies and standards in the literature on the behavior of liquid storage tanks. The most detailed method is the incremental dynamic analysis, which considers the time history analysis within a finite element model for the seismic analysis of unanchored circular steel liquid storage tanks to assess performance. In this study, a performance-based study was conducted on the dynamic behavior of an unanchored circular steel liquid storage tank in order to consider possible improvements in the design phase of the model to withstand earthquakes. It is assumed that the tanks stand on a rigid foundation and are exposed to one-way horizontal ground motion. The main purpose of the study is to determine the performance of the structure for certain failure criteria by using the engineering program ABAQUS to perform reliability-based analyzes of the modelSıvı depolama tankları, endüstriyel tesislerin güvenliği için önemli sistemler olduğundan, bu yapıların sağlamlığı ve hizmet verebilirliği kilit konulardır. Bu nedenle, büyük sıvı depolama tanklarının depremler sırasında hasara dayanma kabiliyeti sadece mühendislik mesleği için değil, aynı zamanda genel olarak toplumun güvenliği için de büyük önem taşımaktadır. Bunun nedeni, bu yapıların genellikle bir toplumun yaşam çizgisinin önemli bir parçasını oluşturması ve bu nedenle acil durumlarda kullanımda kalmalarıdır. Ayrıca, bazı tesislerde depolanan içerik tehlikeli olabileceğinden, bu durumda, kazara sızmaya karşı gerekli önlemler alınmalıdır. Depolama tanklarının toplum için önemi nedeniyle, literatürde sıvı depolama tanklarının davranışı hakkında birçok çalışma ve standart bulunmaktadır. Ankrajsız dairesel çelik sıvı depolama tanklarının performansını değerlendirmek için en ayrıntılı yöntem olan artımlı dinamik analiz methodu zaman geçmişi analizlerinin sonlu elemanlar modeline uygulanmasıyla elde edilir. Bu çalışmada, depremlere dayanacak modelin tasarım aşamasında olası gelişmeleri dikkate almak için, sabit olmayan bir dairesel çelik sıvı depolama tankının dinamik davranışı üzerinde performansa dayalı bir çalışma yapılmıştır. Tankların rijid bir temel üzerinde durduğu ve tek yönlü yatay yer hareketine maruz kaldığı varsayılmaktadır. Çalışmanın temel amacı, modelin güvenilirlik tabanlı analizlerini yapmak için ABAQUS mühendislik programını kullanarak belirli başarısızlık kriterleri için yapının performansını belirlemektir
Comparison of Radio-guided Occult Lesion Localization (ROLL) and Magnetic Occult Lesion Localization (MOLL) for Non-palpable Lesions: A Phantom Model Study
No full textSezgin, Efe/0000-0002-8000-7485PubMed: 31699672We sought to compare radio-guided localization and magnetic tracer localization techniques by using a phantom model for excision of nonpalpable breast lesions. There was no difference between the groups in the duration of operative excision, specimen weight, or specimen volume. Magnetic occult lesion localization can be performed in clinics without the need for a nuclear medicine team and radiation safety procedures. Background: Localization of nonpalpable breast cancers can be achieved with several techniques. We sought to compare radio-guided localization (ROLL) and magnetic tracer localization (MOLL) techniques by using a phantom model we previously developed, which can provide an accurate simulation for excision of nonpalpable breast lesions. Materials and Methods: We designed 20 phantom models (10 MOLL, 10 ROLL group) for localization. A handheld gamma probe for the ROLL group and a manual magnetometer (SentiMag) for the MOLL group were used to test the ability of the modality to detect olives in turkey breasts. The excision time for each procedure, specimen size, and weight of the specimens removed from the turkey breasts were recorded. Results: Both techniques resulted in 100% retrieval of the lesions. There was no difference between the groups in the duration of operative excision, specimen weight, or specimen volume. Conclusion: This experimental trial found similar success rates for ROLL and MOLL in localization of occult lesions using the turkey breast phantom model. MOLL can be performed in clinics without the need for a nuclear medicine team and radiation safety procedures. (C) 2019 Elsevier Inc. All rights reserved
Glikozun alkil glikozitlere katalitik dönüşümü
No full textThesis (Doctoral)--Izmir Institute of Technology, Chemical Engineering, Izmir, 2020Includes bibliographical references (leaves: 63-66)Text in English; Abstract: Turkish and EnglishIn this study, it was pursued to develop acidic mesoporous catalysts for the synthesis of octyl glucosides. Butyl glucoside synthesis was used for catalyst screening. Tungstophosphoric acid (TPA) incorporated mesoporous silica (TPA-SBA-15), sulfated La incorporated titania-silica (SO4/La-TiO2-SiO2), organosulfonic acid functionalized mesoporous silica (Propyl-SO3-SBA-15), and sulfated mesoporous carbon (SO4/CMK-3) catalysts were prepared for this purpose. The effects of the active species (sulfates, tungstophosphoric acid and organosulfonic acid) and promoter (La) on the catalyst properties and activity were investigated. All the catalysts had mesoporous structure and high surface area. The acidity and acid site character varied depending on the catalyst type and amount of the active sites. La promoter was found effective to enhance the sulfation performance and to improve the stability of sulfates. The TPA-SBA-15 catalysts provided high glucose conversions (over 99%) and butyl glucoside yields (over 95%) due to their acidity, Keggin ion structure and pore size. The SO4/La-TiO2-SiO2 catalysts and SO4/CMK-3 catalysts were also active with glucose conversions of 74.4 % and 70 % respectively. The reaction parameters such as the reaction temperature (117 and 100 oC) and catalyst amount (20 and 30 wt% wrt. glucose) were studied in butyl glucoside synthesis over TPA-SBA-15 and SO4/La-TiO2-SiO2 which were the most active catalysts. These catalysts were found to be reusable in glycosidation with 1-butanol. Octyl glucoside synthesis was carried out via direct glycosidation. The octyl glucoside yields obtained over TPA-SBA-15 and SO4/La-TiO2-SiO2 catalysts were above 55 % and 43 % respectively. The catalysts were found promising for further investigations.Bu çalışmada, glikozun 1-oktanol ile glikozidasyonu yoluyla oktil glukozitlerin sentezlenmesi için asidik mezo-gözenekli katalizörler geliştirilmesi amaçlanmıştır. Katalizör tarama testleri bütil glukozit sentezinde yaplmıştır. Tungstofosforik asit (TPA) katkılı mezo-gözenekli silika (TPA-SBA-15), sülfatlı La katkılı titanya-silikat (SO4/La-TiO2-Si02), organosülfonik asit ile fonksiyonelize edilen mezo-gözenekli silika (Propyl-SO3-SBA-15) ve sülfatlı mezo-gözenekli karbon (SO4 /CMK-3) katalizörleri hazırlanmıştır. Aktif malzemelerin (sülfatlar, tungstofosforik asit ve organosülfonik asit) ve katkı malzemesinin (La) katalizör özellikleri ve aktivitesi üzerindeki etkileri ayrıntılı karakterizasyonlarla araştırılmıştır. Tüm katalizörler mezo-gözenekli yapıya ve yüksek yüzey alanına sahiptir. Asitlik ve asit bölgesi karakteri, katalizör tipine ve aktif malzemenin miktarına bağlı olarak değişmiştir. La katkısının sülfatlama performansını arttırmak ve sülfatların kararlılıklarını geliştirmek için etkili olduğu bulunmuştur. TPA-SBA-15 katalizörleri yüksek glikoz dönüşümleri (% 99 'un üzerinde) ve bütil glukozit verimleri (% 95'in üzerinde) sağlamıştır. Bu katalizörlerin aktiviteleri, yüksek asitlikleri ve Keggin iyon yapısından kaynaklanmaktadır. SO4/La-TiO2-SiO2 katalizörleri ve SO4/CMK-3 katalizörleri de sırasıyla % 74.4 ve% 70 glikoz dönüşümleri ile aktif bulunmuştur. TPA-SBA-15 ve SO4/La-TiO2-SiO2 katalizörleri üzerinde, reaksiyon sıcaklığı (117 ve 100 oC) ve katalizör miktarı (glikoza göre kütlece % 20 ve % 30) gibi reaksiyon parametreleri incelenmiştir. Bu katalizörlerin 1-butanol ile glikozidasyonda tekrar kullanılabilir oldukları tespit edilmiştir. Oktil glukozit sentezi, glukozun 1-oktanol ile doğrudan glikozidasyonu yoluyla gerçekleştirilmiştir. TPA-SBA-15 ve SO4/La-TiO2-SiO2 katalizörleri üzerinde elde edilen oktil glukozit verimleri sırasıyla % 55 ve % 43'ün üzerindedir. Katalizörler ilerideki araştırmalar için umut verici bulunmuştur.TUBITAK (117M160
Measurement of CKM matrix elements in single top quark t-channel production in proton-proton collisions at root s=13 TeV
No full textIvanchenko, Vladimir N/0000-0002-1844-5433; Cortezon, Jose Enrique Palencia/0000-0001-8264-0287; Stahl, Achim/0000-0002-8369-7506; Fallavollita, Francesco/0000-0003-2315-2499; Boimska, Bozena/0000-0002-4200-1541; Polikarpov, Sergey/0000-0001-6839-928X; Lopez, Oscar Gonzalez/0000-0002-4532-6464; Obertino, Maria Margherita/0000-0002-8781-8192; Bartosik, Nazar/0000-0002-7196-2237; Yzquierdo, Antonio Perez-Calero/0000-0003-3036-7965; Da Silveira, Gustavo Gil/0000-0003-3514-7056; TOPAKSU, Aysel KAYIS/0000-0001-5819-6913; Ivanchenko, Vladimir/0000-0002-1844-5433; Tiras, Emrah/0000-0002-5628-7464; Bagliesi, Giuseppe/0000-0003-4298-1620; Terkulov, Adel/0000-0003-4985-3226; Calligaris, Luigi/0000-0002-9951-9448; Gonzalez, Barbara Alvarez/0000-0001-7767-4810; Goh, Junghwan/0000-0002-1129-2083; Malawski, Maciej/0000-0001-6005-0243; De Guio, Federico/0000-0001-5927-8865; Steggemann, Jan/0000-0003-4420-5510; Ferencek, Dinko/0000-0001-9116-1202; Ricca, Giuseppe Della/0000-0003-2831-6982; CAKIR, Altan/0000-0002-8627-7689; Arneodo, Michele/0000-0002-7790-7132; Meridiani, Paolo/0000-0002-8480-2259; de Souza Sandro, Fonseca/0000-0001-7830-0837; Lezki, Samet/0000-0002-6909-774X; Bortignon, Pierluigi/0000-0002-5360-1454; Loukas, Dimitris/0000-0002-7431-3857; Yazgan, Efe/0000-0001-5732-7950; Iglesias, Maria Cruz Fouz/0000-0003-2950-976X; Guler, Y./0000-0001-7598-5252; Wulz, Claudia-Elisabeth E/0000-0001-9226-5812; Duarte, Javier/0000-0002-5076-7096; Galati, Giuliana/0000-0001-7348-3312; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Minafra, Nicola/0000-0003-4002-1888; Tcherniaev, Evgueni/0000-0002-3685-0635; Dudko, Lev/0000-0002-4462-3192; Azarkin, Maxim/0000-0002-7448-1447; Gokbulut, Gul/0000-0002-0175-6454; Ligabue, Franco/0000-0002-1549-7107; Blekman, Freya/0000-0002-7366-7098; Cuevas-Maestro, Francisco Javier/0000-0001-5080-0821; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Andreev, Vladimir F/0000-0002-5492-6920; Puerta Pelayo, Jesus/0000-0001-7390-1457; CHANG, PAO-TI/0000-0003-4064-388X; Schonenberger, Myriam/0000-0002-6508-5776; Lawhorn, Jay/0000-0002-8597-9259; Mundim, Luiz/0000-0001-9964-7805; Felcini, Marta/0000-0002-2051-9331; Nguyen, Thong Q./0000-0003-3954-5131; Cassese, Antonio/0000-0003-3010-4516; Zanetti, Marco/0000-0003-4281-4582; Manca, Elisabetta/0000-0001-8946-655X; Forthomme, Laurent/0000-0002-3302-336X; Govoni, Pietro/0000-0002-0227-1301; Sharma, Varun/0000-0003-1287-1471; Kole, Gouranga/0000-0002-3285-1497; Kothekar, Kunal/0000-0001-5102-4326; Schwandt, Joern/0000-0002-0052-597X; Gutsche, Oliver/0000-0002-8015-9622; Bodek, Arie/0000-0003-0409-0341; Gandrajula, Reddy Pratap/0000-0001-9053-3182; Wilson, Graham/0000-0003-0917-4763; Shopova, Mariana/0000-0001-6664-2493; Dharmaraatna, Welathantri/0000-0002-6366-837X; Androsov, Konstantin/0000-0003-2694-6542; Benato, Lisa/0000-0001-5135-7489; Hall, Geoffrey/0000-0002-6299-8385; Dallavalle, Gaetano Marco/0000-0002-8614-0420; Jafari, Abideh/0000-0001-7327-1870; Vami, Tamas Almos/0000-0002-0959-9211; Ruiz, Jose/0000-0002-3306-0363; Belloni, Alberto/0000-0002-1727-656X; Ulrich, Ralf/0000-0002-2535-402X; Heikkila, Jaana/0000-0002-0538-1469; Martinez Ruiz del Arbol, Pablo/0000-0002-7737-5121; Garcia, Francisco/0000-0002-4023-7964; Massironi, Andrea/0000-0002-0782-0883; Vilela Pereira, Antonio/0000-0003-3177-4626; Ecklund, Karl/0000-0002-6976-4637; Sharma, Ram Krishna/0000-0003-1181-1426; Spagnolo, Paolo/0000-0001-7962-5203; Goldstein, Joel/0000-0003-1591-6014; Zenz, Seth/0000-0002-9720-1794; Robert, Schoefbeck/0000-0002-2332-8784; Zucchetta, Alberto/0000-0003-0380-1172; ALCARAZ MAESTRE, JUAN/0000-0003-0914-7474; Shevchenko, Rostyslav/0000-0002-3236-4090; Waltenberger, Wolfgang/0000-0002-6215-7228; Conway, John/0000-0003-2719-5779; Krammer, Manfred/0000-0003-2257-7751; Amendola, Chiara/0000-0002-4359-836X; Poudyal, Nabin/0000-0003-4278-3464; Mitra, Soureek/0000-0002-3060-2278; Harb, Ali/0000-0001-5750-3889; Ptochos, Fotios/0000-0002-3432-3452; Alverson, George/0000-0001-6651-1178; Palladino, Vito/0000-0002-9786-9620; Popov, Andrey/0000-0002-1207-0984; Kratschmer, Ilse/0000-0002-5636-9259; d'Enterria, David/0000-0002-5754-4303; Ricci-Tam, Francesca/0000-0001-9750-7702; Gerosa, Raffaele/0000-0001-8359-3734; David, Pieter/0000-0001-9260-9371; Fiorina, Davide/0000-0002-7104-257X; Vischia, Pietro/0000-0002-7088-8557; Soares, Mara/0000-0001-9676-6059; Heredia de la Cruz, Ivan/0000-0002-8133-6467; Keaveney, James/0000-0003-0766-5307; Martelli, Arabella/0000-0003-3530-2255; Smith, Wesley/0000-0003-3195-0909; Hamel de Monchenault, Gautier/0000-0002-3872-3592; Consuegra Rodriguez, Sandra/0000-0002-1383-1837; Costa, Salvatore/0000-0001-9919-0569; Akgun, Bora/0000-0001-8888-3562; Rappoccio, Salvatore/0000-0002-5449-2560; Shah, Aashaq/0000-0002-6157-2016; Bhowmik, Sandeep/0000-0003-1260-973X; Zuolo, Davide/0000-0003-3072-1020; Kreczko, Luke/0000-0003-2341-8330; Krikler, Benjamin/0000-0001-9712-0030; Bloom, Kenneth/0000-0002-4272-8900; Pantaleo, Felice/0000-0003-3266-4357; Abdelalim, Ahmed Ali/0000-0002-2056-7894; Tinoco Mendes, Andre David/0000-0001-5854-7699; Zhang, Zhicai/0000-0002-1630-0986; Cristella, Leonardo/0000-0002-4279-1221; Buchanan, James/0000-0001-8207-5556; Taylor, Lucas/0000-0002-6584-2538; Gonzalez Caballero, Isidro/0000-0002-8087-3199; Chapon, Emilien/0000-0001-6968-9828; Rabbertz, Klaus/0000-0001-7040-9846; Fernandez Ramos, Juan Pablo/0000-0002-0122-313X; Leonardo, Nuno/0000-0002-9746-4594; Pastrone, Nadia/0000-0001-7291-1979; Bartok, Marton/0000-0002-4440-2701; Moraes, Arthur/0000-0002-5157-5686; Belyaev, Alexander/0000-0002-1733-4408; Lange, Johannes/0000-0001-7513-6330; Ebrahimi, Aliakbar/0000-0003-4472-867X; Bhandari, Rohan/0000-0001-5888-955X; Zevi Della Porta, Giovanni/0000-0003-0495-6061; Goy Lopez, Silvia/0000-0001-6508-5090; YOON, INSEOK/0000-0002-3491-8026; Fernandez Bedoya, Cristina/0000-0001-8057-9152; Hernandez Calama, Jose Maria/0000-0001-6436-7547; Veckalns, Viesturs/0000-0003-3676-9711; Verweij, Marta/0000-0002-1504-3420; Cadamuro, Luca/0000-0001-8789-610X; Staiano, Amedeo/0000-0003-1803-624X; Doroba, Krzysztof/0000-0002-7818-2364; Haddad, Yacine/0000-0003-4916-7752; Golf, Frank/0000-0003-3567-9351; Myronenko, Volodymyr/0000-0002-3984-4732; Lo Meo, Sergio/0000-0003-3249-9208; Starling, Elizabeth/0000-0002-4399-7213; Zorbakir, Ibrahim Soner/0000-0002-5962-2221; Krintiras, Georgios Konstantinos/0000-0002-0380-7577; Haller, Johannes/0000-0001-9347-7657; Bachiller, IreneBachiller/0000-0002-3721-4876; Garutti, Erika/0000-0003-0634-5539; Landsberg, Greg/0000-0002-4184-9380; Blumenfeld, Barry/0000-0003-1150-1735; Mousa, Jehad/0000-0002-2978-2718; Mora Herrera, Maria Clemencia/0000-0003-3915-3170; Tavolaro, Vittorio Raoul/0000-0003-2518-7521; Carrillo Montoya, Camilo/0000-0002-6245-6535; Csanad, Mate/0000-0002-3154-6925; Monaco, Vincenzo/0000-0002-3617-2432; Snoeys, Walter/0000-0003-3541-9066; Caputo, Claudio/0000-0001-7522-4808; Usai, Emanuele/0000-0001-9323-2107; Wu, Zhenbin/0000-0003-2165-9501; Gomez, Gervasio/0000-0002-1077-6553; Pieri, Marco/0000-0003-3303-6301; CUFFIANI, Marco/0000-0003-2510-5039; Li, Qiang/0000-0002-8290-0517; Klein, Daniel/0000-0001-9143-5162; Tapper, Alexander/0000-0003-4543-864X; Ivanov, Andrew/0000-0002-9270-5643; Watson, Ian/0000-0003-2141-3413; Salvatico, Riccardo/0000-0002-2751-0567; Grohsjean, Alexander/0000-0003-0748-8494; FORD, WILLIAM/0000-0001-8703-6943; Wardle, Nicholas/0000-0003-1344-3356; Marzocchi, Badder/0000-0001-6687-6214; Hurtado Anampa, Kenyi/0000-0002-9779-3566; Pfeiffer, Andreas/0000-0001-5328-448X; Chauhan, Shubhanshu/0000-0002-6544-5794; Vartak, Adish/0000-0003-1507-1365; Raidal, Martti/0000-0001-7040-9491; Lange, Clemens/0000-0002-3632-3157; Sznajder, Andre/0000-0001-6998-1108; Botta, Cristina/0000-0002-8072-795X; Feld, Lutz/0000-0001-9813-8646; Sosa Ricardo, Rafael Eduardo/0000-0002-2240-6699; Sanchez Navas, Sergio/0000-0001-6129-9059; Redondo, Ignacio/0000-0003-3737-4121; Belforte, Stefano/0000-0001-8443-4460; Frankenthal, Andre/0000-0002-2583-5982; Alves, Gilvan/0000-0002-8369-1446; Tosi, Silvano/0000-0002-7275-9193; Mnich, Joachim/0000-0001-7242-8426; Giammanco, Andrea/0000-0001-9640-8294; Migliore, Ernesto/0000-0002-2271-5192; Dewanjee, Ram Krishna/0000-0001-6645-6244; Levchuk, Leonid/0000-0001-5889-7410; Autermann, Christian/0000-0002-0057-0033; Gozzelino, Andrea/0000-0002-6284-1126; Delaere, Christophe/0000-0001-8707-6021; Rizzi, Andrea/0000-0002-4543-2718; Kayis Topaksu, Aysel/0000-0002-3169-4573; Mitselmakher, Guenakh/0000-0001-5745-3658; Sculac, Toni/0000-0002-9578-4105; Giacomelli, Paolo/0000-0002-6368-7220; Beaudette, Florian/0000-0002-1194-8556; Azzi, Patrizia/0000-0002-3129-828X; Arcidiacono, Roberta/0000-0001-5904-142X; Ince Lezki, Merve/0000-0001-6907-0195; Van Onsem, Gerrit/0000-0002-1664-2337; Backhaus, Malte/0000-0002-5888-2304; Kim, Tae Jeong/0000-0001-8336-2434; Sagir, Sinan/0000-0002-2614-5860; Heindl, Maximilian/0000-0002-2831-463X; Murillo Quijada, Javier Alberto/0000-0003-4933-2092; Shchutska, Lesya/0000-0003-0700-5448; Lethuillier, Morgan/0000-0001-6185-2045; Piperov, Stefan/0000-0002-9266-7819; Petrucciani, Giovanni/0000-0003-0889-4726; Fernandez Perez Tomei, Thiago Rafael/0000-0002-1809-5226; Heath, Helen/0000-0001-6576-9740; Fernandez Menendez, Javier/0000-0002-5213-3708; Kasemann, Matthias/0000-0002-0429-2448; Roskes, Jeffrey/0000-0001-8761-0490; Everaerts, Pieter/0000-0003-3848-324X; Faccioli, Pietro/0000-0003-1849-6692; Cepeda, Maria/0000-0002-6076-4083; Tonelli, Guido Emilio/0000-0003-2606-9156; Konecki, Marcin/0000-0001-9482-4841; Lucchini, Marco Toliman/0000-0002-7497-7450; Dominguez, Aaron/0000-0002-7420-5493; Cavallari, Francesca/0000-0002-1061-3877; Tholen, Heiner/0000-0002-2299-2421; Novaes, Sergio/0000-0003-0471-8549; Klanner, Robert/0000-0002-7004-9227; Fiorendi, Sara/0000-0003-3273-9419; Sanchez-Hernandez, Alberto/0000-0001-9548-0358; Vormwald, Benedikt/0000-0003-2607-7287; Navarro-Tobar, Alvaro/0000-0003-3606-1780; Trevisani, Nicolo/0000-0002-5223-9342; Ghosh, Saranya/0000-0001-6717-0803; Tully, Christopher/0000-0001-6771-2174; Naimuddin, Md/0000-0003-4542-386X; Saka, Halil/0000-0001-7616-2573; Paulini, Manfred/0000-0002-6714-5787; Litov, Leandar/0000-0002-8511-6883; Rossi, Biagio/0000-0002-0807-8772; Moon, Chang-Seong/0000-0001-8229-7829; Ruiz Jimeno, Alberto/0000-0002-3639-0368; Benitez, Jose Feliciano/0000-0002-2633-6712; Tosi, Nicolo/0000-0002-0474-0247; Malik, Sudhir/0000-0002-6356-2655; Padula, Sandra S./0000-0003-3071-0559; Schroder, Matthias/0000-0001-8058-9828; Collard, Caroline/0000-0002-5230-8387; Zghiche, Amina/0000-0002-1178-1450; Alexakhin, Vadim/0000-0002-4886-1569; Galli Mercadante, Pedro/0000-0001-8333-4302; Wang, Dayong/0000-0002-9013-1199; Kyberd, Paul/0000-0002-7353-7090; Ramirez Garcia, Mateo/0000-0002-4564-3822; lee, jason/0000-0002-2153-1519; Kiminsu, Ugur/0000-0001-6940-7800; Sciacca, Crisostomo/0000-0002-8412-4072; Bravo, Cameron/0000-0003-1102-8247; Moran, Dermot/0000-0002-1941-9333; Joshi, Yagya/0000-0002-0651-1878; Bernardes, Cesar Augusto/0000-0001-5790-9563; Grunewald, Martin/0000-0002-5754-0388; Mrenna, Stephen/0000-0001-8731-160X; Schulte, Jan-Frederik/0000-0003-4421-680X; Viliani, Lorenzo/0000-0002-1909-6343; Abbiendi, Giovanni/0000-0003-4499-7562; Dubinin, Mikhail/0000-0002-7766-7175; Rolandi, Luigi (Gigi)/0000-0002-0635-274X; Grandi, Claudio/0000-0001-5998-3070; Canelli, Florencia/0000-0001-6361-2117; Brigljevic, Vuko/0000-0001-5847-0062; Reis, Thomas/0000-0003-3703-6624; Gershtein, Yuri/0000-0002-4871-5449; Barnyakov, Alexander/0000-0002-8556-6622; Dragicevic, Marko/0000-0003-1967-6783The first direct, model-independent measurement is presented of the modulus of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements vertical bar V-tb vertical bar, vertical bar V-td vertical bar, and vertical bar V-ts vertical bar, in final states enriched in single top quark t-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1). Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of vertical bar V-tb vertical bar > 0.970 is measured at the 95% confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values vertical bar V-tb vertical bar = 0.988 +/- 0.024, and vertical bar V-td vertical bar(2) + vertical bar V-ts vertical bar(2) = 0.06 +/- 0.06, where the uncertainties include both statistical and systematic components, are measured. (C) 2020 The Author. Published by Elsevier B.V.FWFAustrian Science Fund (FWF); FNRSFonds de la Recherche Scientifique - FNRS; FWO (Belgium)FWO; CNPqNational Council for Scientific and Technological Development (CNPq); CAPESCAPES; FAPERJCarlos Chagas Filho Foundation for Research Support of the State of Rio de Janeiro (FAPERJ); FAPERGSFoundation for Research Support of the State of Rio Grande do Sul (FAPERGS); FAPESP (Brazil)Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); MES (Bulgaria); MOST; NSFC (China)National Natural Science Foundation of China (NSFC); COLCIENCIAS (Colombia)Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; CSF (Croatia); SENESCYT (Ecuador); MoER, ERC IUT, PUT; ERDF (Estonia)European Union (EU); Academy of FinlandAcademy of Finland; MEC; CEAFrench Atomic Energy Commission; CNRS/IN2P3 (France)Centre National de la Recherche Scientifique (CNRS); BMBFFederal Ministry of Education & Research (BMBF); DFGGerman Research Foundation (DFG); HGF (Germany); GSRT (Greece)Greek Ministry of Development-GSRT; NKFIA (Hungary); DAEDepartment of Atomic Energy (DAE); DSTDepartment of Science & Technology (India); IPM; SFI (Ireland)Science Foundation Ireland; INFN (Italy)Istituto Nazionale di Fisica Nucleare (INFN); NRF (Republic of Korea); MES (Latvia); MOEMinistry of Higher Education & Scientific Research (MHESR); UM (Malaysia); BUAP; CONACYTConsejo Nacional de Ciencia y Tecnologia (CONACyT); UASLP-FAI (Mexico); FCT (Portugal)Portuguese Foundation for Science and Technology; JINR (Dubna); RFBRRussian Foundation for Basic Research (RFBR); MESTD (Serbia); SEIDI; FEDER (Spain)European Union (EU); Swiss Funding Agencies (Switzerland); NSTDA; TUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK); TAEKMinistry of Energy & Natural Resources - Turkey; NASU (Ukraine); DOEUnited States Department of Energy (DOE); NSFNational Science Foundation (NSF); Marie-Curie programmeEuropean Union (EU); European Research CouncilEuropean Research Council (ERC); Horizon 2020 Grant [675440, 752730, 765710]; Leventis Foundation; Alfred P. Sloan FoundationAlfred P. Sloan Foundation; Alexander von Humboldt FoundationAlexander von Humboldt Foundation; Belgian Federal Science Policy OfficeBelgian Federal Science Policy Office; Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium)Fonds de la Recherche Scientifique - FNRS; Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium)Institute for the Promotion of Innovation by Science and Technology in Flanders (IWT); FWO (Belgium) under the "Excellence of Science - EOSFWO [30820817]; Beijing Municipal Science & Technology CommissionBeijing Municipal Science & Technology Commission [Z191100007219010]; Ministry of Education, Youth and Sports(MEYS) of the Czech RepublicMinistry of Education, Youth & Sports - Czech Republic; Deutsche Forschungsgemeinschaft (DFG) under Germany's Excellence StrategyGerman Research Foundation (DFG) [EXC 2121, 390833306]; Janos Bolyai Research Scholarship of the Hungarian Academy of SciencesHungarian Academy of Sciences [123842, 123959, 124845, 124850, 125105, 128713, 128786, 129058]; Council of Science and Industrial Research, IndiaCouncil of Scientific & Industrial Research (CSIR) - India; HOMING PLUS programme of the Foundation for Polish Science; European UnionEuropean Union (EU); European Regional Development FundEuropean Union (EU) [Harmonia 2014/14/M/ST2/00428, Opus2014/13/B/ST2/02543, 2014/15/B/ST2/03998, 2015/19/B/ST2/02861]; Sonata-bis [2012/07/E/ST2/01406]; National Priorities Research Program by Qatar National Research Fund; Ministry of Science and Education [14, W03.31.0026]; Tomsk Polytechnic University Competitiveness Enhancement Program [FSWW-2020-0008]; Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu [MDM-2015-0509]; Programa Severo Ochoa del Principado de Asturias; Thalis and Aristeia programmes; EU-ESFEuropean Union (EU); Greek NSRFGreek Ministry of Development-GSRT; Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University; Kavli Foundation; Nvidia Corporation; SuperMicro Corporation; Welch FoundationThe Welch Foundation [C-1845]; Weston Havens Foundation (USA)We congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centres and personnel of the Worldwide LHC Computing Grid for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction and operation of the LHC and the CMS detector provided by the following funding agencies: BMBWF and FWF (Austria); FNRS and FWO (Belgium); CNPq, CAPES, FAPERJ, FAPERGS, and FAPESP (Brazil); MES (Bulgaria); CERN; CAS, MOST, and NSFC (China); COLCIENCIAS (Colombia); MSES and CSF (Croatia); RPF (Cyprus); SENESCYT (Ecuador); MoER, ERC IUT, PUT and ERDF (Estonia); Academy of Finland, MEC, and HIP (Finland); CEA and CNRS/IN2P3 (France); BMBF, DFG, and HGF (Germany); GSRT (Greece); NKFIA (Hungary); DAE and DST (India); IPM (Iran); SFI (Ireland); INFN (Italy); MSIP and NRF (Republic of Korea); MES (Latvia); LAS (Lithuania); MOE and UM (Malaysia); BUAP, CINVESTAV, CONACYT, LNS, SEP, and UASLP-FAI (Mexico); MOS (Montenegro); MBIE (New Zealand); PAEC (Pakistan); MSHE and NSC (Poland); FCT (Portugal); JINR (Dubna); MON, ROSATOM, RAS, RFBR, and NRC KI (Russia); MESTD (Serbia); SEIDI, CPAN, PCTI, and FEDER (Spain); MoSTR(Sri Lanka); Swiss Funding Agencies (Switzerland); MST (Taipei); ThEPCenter, IPST, STAR, and NSTDA (Thailand); TUBITAK and TAEK (Turkey); NASU (Ukraine); STFC (United Kingdom); DOE and NSF (USA).; Individuals have received support from the Marie-Curie programme and the European Research Council and Horizon 2020 Grant, contract Nos. 675440, 752730, and 765710 (European Union); the Leventis Foundation; the Alfred P. Sloan Foundation; the Alexander von Humboldt Foundation; the Belgian Federal Science Policy Office; the Fonds pour la Formation a la Recherche dans l'Industrie et dans l'Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the F.R.S.-FNRS and FWO (Belgium) under the "Excellence of Science - EOS" - be.h project n. 30820817; the Beijing Municipal Science & Technology Commission, No. Z191100007219010; The Ministry of Education, Youth and Sports(MEYS) of the Czech Republic; the Deutsche Forschungsgemeinschaft (DFG) under Germany's Excellence Strategy - EXC 2121 "Quantum Universe" 390833306; the Lendulet ("Momentum") Programme and the Janos Bolyai Research Scholarship of the Hungarian Academy of Sciences, the New National Excellence Program UNKP, the NKFIA research grants 123842, 123959, 124845, 124850, 125105, 128713, 128786, and 129058 (Hungary); the Council of Science and Industrial Research, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, European Regional Development Fund, the Mobility Plus programme of the Ministry of Science and Higher Education, the National Science Center (Poland), contracts Harmonia 2014/14/M/ST2/00428, Opus2014/13/B/ST2/02543, 2014/15/B/ST2/03998, and 2015/19/B/ST2/02861, Sonata-bis 2012/07/E/ST2/01406; the National Priorities Research Program by Qatar National Research Fund; the Ministry of Science and Education, grant no. 14.W03.31.0026 (Russia); the Tomsk Polytechnic University Competitiveness Enhancement Program and "Nauka" Project FSWW-2020-0008 (Russia); the Programa Estatal de Fomento de la Investigacion Cientifica y Tecnica de Excelencia Maria de Maeztu, grant MDM-2015-0509 and the Programa Severo Ochoa del Principado de Asturias; the Thalis and Aristeia programmes cofinanced by EU-ESF and the Greek NSRF; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chulalongkorn University and the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); The Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; The Welch Foundation, contract C-1845; and the Weston Havens Foundation (USA)
Modern değişken hızlı rüzgar türbini için mikro şebekede frekans kontrolü sağlayabilecek atalet ve frekans eğim tepkisi kontrolörü
No full textThe increasing penetration of modern Variable Speed Wind Turbines (VSWTs) in microgrids creates the problem of frequency stabilization due to reduced inertia of the power system. To emulate the Inertia Response of the conventional synchronous machines, wind turbines can be provided with an inertia emulation controller. The modeling presented in this paper aims at equipping the modern Type D wind turbine with inertia response and primary frequency control (PFC) capabilities. Two controllers - inertial and droop, are implemented and their frequency control capabilities are compared in an isolated power system which consists of a conventional steam turbine generator and a wind farm. The results suggest that proposed controllers help in better frequency control performance in the microgrid.Modern Değişken Hızlı Rüzgar Türbinlerinin (VSWT) mikro şebekelerde artan varlığı, güç sisteminin ataletinin azalması nedeniyle frekans stabilizasyonu sorunu yaratmaktadır. Geleneksel senkron makinelerin Atalet Tepkisi taklit etmek için, rüzgar türbinlerine bir atalet emülasyon denetleyicisi sağlanabilir. Bu yazıda sunulan modelleme, modern D Tipi rüzgar türbininin atalet tepkisi ve birincil frekans kontrolü (PFC) yetenekleri ile donatılmasını amaçlamaktadır. İki kontrol cihazı - atalet ve frekans eğim tepkisi, uygulanır ve frekans kontrol yetenekleri, geleneksel bir buhar türbini jeneratörü ve rüzgar tarlasında oluşan izole edilmiş güç sistemi ile karşılaştırılır. Elde edilen sonuçlar, önerilen kontrol cihazlarının mikro şebekedeki daha iyi frekans kontrol performansına yardımcı olduğunu göstermektedir
Open access and open science in Turkey
No full textTürkiye’de Açık Erişim ve Açık Bilim (bildiri). ÜNAK2020 Akademik Yayıncılık, Açık Bilim ve Kütüphane(ci)ler Sempozyumu, 1-2 Ekim 2020, Yaşar Üniversitesi, İzmirAçık erişim, bilimsel bilgilere herhangi bir engel olmaksızın erişilmesini, bu bilgilerin kullanılmasını ve
paylaşılmasını sağlar. Kişisel ve toplumsal düzeyde hepimizi ilgilendiren açık erişim ve açık bilim
çalışmaları Türkiye’de son yıllarda önemli bir ivme kazanmıştır. Ulusal düzeyde gerçekleştirilen
çalışmalar ve yürütülen Avrupa Birliği projeleri politika yapıcıların açık erişim ve açık bilim konularına
ilgi göstermelerini sağlayarak gelişmeleri tetiklemiştir. Bu gelişmeler 2012’den itibaren düzenlenen
konferans, seminer vb. gibi etkinliklerle ve devlet kurum ve kuruluşlarının da sürece dâhil olmasıyla
birlikte daha da hızlanmıştır. Bu çalışmada Türkiye’deki farklı kişi, kurum ve kuruluşlar tarafından
gerçekleştirilen açık erişim ve açık bilim faaliyetleri literatüre dayanarak incelenmektedir.Open access provides access to, use of, and sharing scientific knowledge without any barriers.
Studies on open access and open science that interest us all on individual and societal levels have
gained a momentum in recent years. Studies carried out on a national level as well as the EU projects
being partaken have drawn the attention of policy-makers and triggered the developments. These
developments have further accelerated with the conferences, seminars and other events that were
organized regularly since 2012 as well as with the inclusion of governmental institutions in this
process. Based on the relevant literature, we review in this paper open access and open science
activities that were carried out by different people and institutions in Turkey
Zr-SBA-15 & SO4/Zr-SBA-15 katalizörleri ile bütil glikozit üretimi
No full textThesis (Master)--Izmir Institute of Technology, Chemical Engineering, Izmir, 2020Includes bibliographical references (leaves: 48-53)Text in English; Abstract: Turkish and EnglishThe purpose of this study was to develop mesoporous solid acid catalyst for glycosidation reaction of butanol. Therefore, Zr incorporated SBA-15 silica materials with two different amount of zirconia loadings were prepared by hydrothermal synthesis. In addition to them, sulfate modified forms (SO/Zr-SBA-15) were prepared by treating Zr-SBA-15 catalysts in 0.5 M and 1.0 M H2SO4 solutions respectively. These 6 catalysts were tested in the glycosidation of butanol and as product butyl glucosides were produced. The reaction tests were carried out in a 100 ml glass reactor at 117°C. Catalysts properties were determined by different characterization techniques. The analysis showed that mesoporous, acidic catalysts were obtained and zirconium was incorporated into SBA-15 structure. While the surface area and pore diameter decreased by higher zirconium loading and sulfonation, acidity of the catalysts increased. The highest acidity was observed in 1.0 SO/Zr-SBA-15-(1.0) catalyst. The formation of butyl glucosides was determined by HPLC analysis. Results showed that activity of the catalysts were different for the glycosidation reaction of butanol. The highest butyl glucoside yield was obtained with 1.0 SO/Zr-SBA-15-(1.0) catalyst, while the lowest yield was obtained with Zr-SBA-15-(1.0) catalyst. This was attributed to the higher acidity (2.35 mmol NH3/g cat.) and B/L ratio (1.97) of 1.0 SO/Zr-SBA-15-(1.0) catalyst with respect to the others. The reusability tests were performed up to 2 times for the catalyst with the best results. There was no major decrease (7%) in the product yields and this confirmed the stability and reusability of the catalysts.Bu çalışmanın amacı, bütil glikozit sentezi reaksiyonu için mezogözenekli katı asit katalizörler geliştirmektir. Bunun için; Zr-SBA-15 silika katalizörleri iki farklı miktarda zirkonyanın yapıya dahil edilmesiyle, hidrotermal sentez ile hazırlanmıştır. Bunlara ek olarak, Zr-SBA-15 katalizörlerinin sırasıyla 0.5 M ve 1.0 M H2S04 çözeltilerinde kimyasal işleme tutulmasıyla sülfat modifiye formları (SO/Zr-SBA-15) üretilmiştir. Bu 6 katalizör, bütil glikozit sentezi reaksiyonunda test edilmiş ve ürün olarak bütil glikozitler elde edilmiştir. Reaksiyon testleri, 117 °C'de 100 ml'lik bir cam reaktörde gerçekleştirilmiştir. Katalizörlerin özellikleri, farklı karakterizasyon teknikleri ile belirlenmiştir. Analiz sonuçları, mezogözenekli, asidik katalizörlerin elde edildiğini ve Zr'nin SBA-15 yapısına başarıyla eklendiğini göstermiştir. Daha fazla zirkonyum yüklemesi ve sülfatlama ile yüzey alanı ve gözenek çapı azalırken, katalizörlerin asitliği artmıştır. En yüksek asitlik değeri 1.0 SO/Zr-SBA-15-(1.0) katalizöründe gözlemlenmiştir. Bütil glikozitlerin oluşumu HPLC analizi ile belirlenmiştir. Bütil glikozit sentezi reaksiyonunda test edilen katalizörler farklı aktiviteler göstermiştir. En yüksek bütil glikozit verimi 1.0 SO/Zr-SBA-15-(1.0) katalizörü ile elde edilirken, en düşük verim Zr-SBA-15-(1.0) katalizörü ile elde edilmiştir. Bu durum diğer katalizörlere nispeten 1.0 SO/Zr-SBA-15-(1.0) katalizörünün daha yüksek asitlik değerine (2.35 mmol NH3/g cat.) ve B/L oranına (1.97) sahip olmasına bağlanmıştır. Yeniden kullanılabilirlik testleri, en iyi sonuçların elde edildiği katalizör ile 2 defaya kadar gerçekleştirilmiştir. Ürün veriminde önemli bir azalış (%7) gözlemlenmemiştir ve bu sonuç katalizörlerin dayanıklılığını ve tekrar kullanılabilirliğini doğrulamıştır.TUBITAK (MAG/117M160